22111413581 has 2 divisors, whose sum is σ = 22111413582. Its totient is φ = 22111413580.

The previous prime is 22111413503. The next prime is 22111413593. The reversal of 22111413581 is 18531411122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20200936900 + 1910476681 = 142130^2 + 43709^2 .

It is a cyclic number.

It is not a de Polignac number, because 22111413581 - 2¹⁴ = 22111397197 is a prime.

It is a super-2 number, since 2×22111413581² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22161413581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055706790 + 11055706791.

It is an arithmetic number, because the mean of its divisors is an integer number (11055706791).

Almost surely, 2^22111413581 is an apocalyptic number.

It is an amenable number.

22111413581 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111413581 is an equidigital number, since it uses as much as digits as its factorization.

22111413581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 29.

The spelling of 22111413581 in words is "twenty-two billion, one hundred eleven million, four hundred thirteen thousand, five hundred eighty-one".